Bah. And I was typing up a long answer quoting the exact same sentence of the book.

Thanks Andrew!

This is not so easy to answer - it depends a lot on the "stiffness" of your power supply under load. Power supplies are typically reted at a voltage that can be maintained under a typical load - Note, what you would measure on an unknown PSU is the open circuit voltage which is typically m...

Derek_Stewart wrote:A question about UQLX, if F1 is automatically keyed by the emulator, how do I initialise the Second Screen, which is F3 or F4.

That's simple. It's not implemented.

Tobias

I'm not sure why you would want to use TV mode in uqlx - That doesn't make much sense to me, as the reason , the small screen and some characters lost on the left doesn't really apply here. The ROMs are not patched, to my knowledge, but rather an F1 key press is simulated after starting the emulator...

Andrew wrote:I expected QxlWinReader to copy the headers too

It does. You must have lost the headers before.

Tobias

Andrew,

you want to read this.

Good Luck!
Tobias

Thank you ! I have not soldered/ desoldered anything in the last 20 years ... so it's time to start again :) And what should I do with that red wire ? just cut it ? Do you know what it was it used for ? I do not find it on the circuit diagram. Some stuff I forgot: ⋅  You probably have an ...

That means your QL has very probably seen a motherboard change - The serial number seems to be for an issue6. Issue 5 QLs can be reconfigured by changing JU1 and to JU6. The circuit diagram here has a dotted box to the bottom right that gives the proper jumper setting. You need configuration (7), wh...

Interesting. You seem to have an issue 6 QL that was retrofitted with EPROMs. (Issue 6 normally came with ROMs and lacked the circuitry issue 5 had that allowed to easily change between various ROM and EPROM configurations). An issue 6 QL should have a 23256 as IC33 and a 23128 as IC34. Yours seems ...

The definition of the functions of the bits in various registers suggests that hardware is being internally reused. So: 1) Are the baud rate bits "don't care" when the mode is set to 'MDV/NET' They seem to. I didn't find anything in the Minerva sources that touches the baud rate bits when...